RELIABILITY IMPROVEMENT OF RADIAL DISTRIBUTION SYSTEM WITH INCROPORATING PROTECTIVE DEVISES -CASE STUDY

This paper present an effective approach of real time evaluation of radial distribution system power flow solution with an objective of determining the voltage profiles, total losses and indices. Two matrices the bus-injection to branch-current matrix (BIBC) and the branch-current to bus voltage matrix (BCBV) and a simple matrix multiplication are used to obtain power flow solutions. In this work we have considered the load diversity factor for analysis of load data for real time system. Assessment of customer and energy oriented indices is an important part of distribution system operation and planning. Distribution system reliability assessment is a measure of continuity and quality of power supply to the consumers, which mainly depends on interruption profile, based on system topology and component reliability data. The performance of the system was investigated on two stage basis first consisting a standard 33 bus systems and then real time distribution system as case study. To demonstrate the effectives of the proposed method, a 24-node 11kv Jeevakona urban distribution feeder is selected, which is a heavily loaded feeder and is already installed by 18 KVAR capacitor bank at each Distribution Transformer (DTR) in LT side with pole mounted. For analyzing the results average load data is considered with an average power factor for feeder and distributed depending on the connected load. The results are presented